如何测试doFilter方法

Question

我试着测试这个方法：

public void doFilter(final ServletRequest request, final ServletResponse response,
    final FilterChain chain) throws IOException, ServletException {
    final HttpServletRequest httpRequest = (HttpServletRequest) request;
    final HttpServletResponse httpResponse = (HttpServletResponse) response;
    if (httpRequest.getSession(true).getAttribute("connected") == null) {
        httpResponse.sendRedirect(request.getServletContext().getContextPath() + "/");
    } else {
        chain.doFilter(request, response);
    }
}

这是我的测试：

@Test
public void testDoFilter() throws IOException, ServletException {
    MockServletContext servletContext = new MockServletContext();
    MockHttpServletRequest request = new MockHttpServletRequest(servletContext);
    MockHttpServletResponse response = new MockHttpServletResponse();
    MockHttpSession session = new MockHttpSession();
    FilterChain chain = Mockito.mock(FilterChain.class);
    String url = "/private/";
    request.setContextPath("/private/");
    UserFilter userfilter = new UserFilter();
    userfilter.doFilter(request, response, chain);
    Mockito.verify(chain, Mockito.times(0)).doFilter(request, response);
    request.setSession(session);
    request.getSession().setAttribute("connected", "toto");
    Mockito.verify(chain, Mockito.times(1)).doFilter(request, response);
}

但是最后一个Mockito.verify没有运行。我也不明白什么时候我做

request.getAttribute("connected")

当我进行时，我获得"toto"，但获得null

request.getSession(true).getAttribute("connected").

你能解释并帮助我吗？感谢

Answer 1

最后一个Mockito.verify(chain, Mockito.times(1)).doFilter(request, response);失败，因为请求的会话包含键/值"connected"，所以doFilter没有调用。

关于request.getAttribute("connected")和request.getSession(true).getAttribute("connected")，我得到了第一个null，第二个toto。